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Finding the Fourth Proportional to 129,686.80, 194,098.20 and 94,046.80

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Solution

The fourth proportional to 129,686.80, 194,098.20 and 94,046.80 is: 140,756.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,686.80 : 194,098.20 = 94,046.80 : x
  2. Step 2: Convert to fraction form
    129,686.80/194,098.20 = 94,046.80/x
  3. Step 3: Cross multiply
    129,686.80x = 194,098.20 × 94,046.80
  4. Step 4: Simplify right side
    129,686.80x = 18,254,314,595.76
  5. Step 5: Solve for x
    x = 18,254,314,595.76/129,686.80
  6. Step 6: Final answer
    x = 140,756.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.